a 1 ​ =2a, start subscript, 1, end subscript, equals, 2 a_i = a_{i - 1} -3a i ​ =a i−1 ​ −3a, start subscript, i, end subscript, equals, a, start subscript, i, minus, 1, end subscript, minus, 3 Find the sum of the first 335335335 terms in the sequence

Researchers were interested in whether relaxation training decreases the number of headaches a person experiences. they randomly assigned 20 participants to a control group or a relaxation training group and noted the change in number of headaches each group reported from the week before training to the week after training. which statistical analysis should be performed to answer the researchers' question?

Aculture started with 3000 bacteria. after 5 hours it grew to 3900 bacteria. predict how many bacteria will be present after 9 hours

During the election for class president, 40% of the students voted for kellen, and 60% of the students voted for robbie. 500 students voted in total. how many more students voted for robbie than for kellen? answer with work : )